Friction chock for cars



Lmll IL. Es. INGRAM A FRICTIO CHOCK .FOR CARS Filedreb. 25, m22

Patented @et Ml, i924.

man B. rnenaivr, or LovrcK, ALABAMA, assrenon vor cnn-Harn 'ro J. w. STEPHEN- soN. or :noviem ALABAMA.

FRICTION CHOGK FOR CARS.

Application filed February 25, 1922. Serial No. 539,232.

To all whom it may concer/n.:

Be it known that I, Lian B. INGRAM, a citizen of the United States of America, residing at Lovick, in the county of Jefferson and State of Alabama, have invented certain new and useful Improvements in Friction Checks for Cars, ofl which the following is a specification.

My invention relates to a device for stopping or slowing up railway cars or for spragging mine cars and the like.

My chief object is to design a movable car check or stop apparatus which operates by its frictional engagement with its track supports to arrest a moving car, or to slow it up sufficiently for it to enter a switch, dump, or other place where a slow speed is desired.

A further object is to design the. apparatus to slide on a main track rail with one or more of the wheels of the `car to be stopped resting thereon and thereby imposing. its or their weight on the apparatus so that its frictional engagement with the track is, in a measure, proportionate to the load to be arrested.

A further object is to make the track engaging bar separate from the stop element co-ordinated therewith so that by retracting the stop element the car can be permitted to run past over the bar. This gives the effect of a. sprag for controlling a car, and my invention contemplates the provision of means automatically operative to retract the stop after the apparat-us has slid to a predetermined point. Heretofore slowing up a car, such as mine cars, has been accomplished by an operator throwing a sprag into the spokes of themoving car, thereby causing the car wheel to drag until a sufficient reduction of speed is attained. The operator then loosens the sprag with his foot and withdraws same allowing the car to proceed. lhile a great degree of dexterity is attained by these operators it is, nevertheless. very dangerous and my present invention proposes to reduce this risk by providing a simple and eiiicientmachine to accomplish these results.

My invention in its preferred embodiment only will be better understood by reference tothe accompanying drawings, in which Fig. 1 is a plan view of mydevice with.

the wheel chock in position on the car track to engage the approaching car wheel.

Fig. 2 is an elevation of Fig. 1, showing in dotted outline the car wheel in engagement with the chock.

Fig. 3 is an end elevation of Fig. 1, showing said wheel outline shown in 2.

Fig. 4 is a sectional elevation of Fig. 1 taken on the line ll-l of Fig. 3, omitting the rails.

Similar reference numerals refer to similar parts throughout the drawings.

As illustrated, I show one rail of the car track 1 laid on the regularly spaced cross ties 2 with the two supplementary rails 3 lying adjacent and parallel to said car track and vspiked to said cross ties. A carriage 4 with bearings 5 for axles 6 on which wheels 7 are journaled, is adapted to travel back and forth on the track formed by the snpplementary rails 3, thewheels projecting downwardly through openings in the carriage 4: in position to engage and travel on the tracks 3. I attach along the bottom of the carriage on each side depending angle irons 8 which receive the carriage rails 8 between them and hold the `carriage on its track. Transversely across the center of the carriage I mount a heavy metallic guide block 9 having a channel in its underface which receives a transverse slide bar 10. This bar at its end adjacent to the track 1 overhangs from the carriage and has mounted on its overhung end a chock 11. I attach to the side face of the carriage adjacent to the track rail 1 a series of channel brackets 12, and each of these several brackets, which are equi-distantly spaced, carries a pin 153 projecting horizontally towards the track rail 1. These several pins are likewise equi-distantly spaced and are adapted to be received in sockets in a friction slide bar 141-. turned flange which is provided with sockets to receive the pins 13 and, the sockets being equi-distantly spaced, the slide friction` bar can be adjusted to extend its forward end farther from the stop so as to bring more than one wheel to rest thereon if desired. l

I mount on the side of the chock 11 bearing lugs 15 between which I pivotally mount a pushbar 16 having its free end inturned towards the track rail 1 and disposed in This bar 14 has a heavy downc position to engage the. outer side of a Wheel at the time-'in engagement with the chock. The other'A endofjtlte pi`i"s`l1`.""b"ar.Ipivctally conneetqbyi D lifnk"1i'y to a bell "crank 18pivotally mounted at 19 on the block Y9 and h a-vng'l-Oue end projecting laterally .ever froihntlie track rail 1 in position tokengage affixed stop `20, or to be pulled back to dotted position by a chain 21 under manual control orwhich may be connected to some suitable anchorage. Theangle brackets '12 14 sufficiently spaced to retract"7 the chock "into dotted"position` Figf'," against the block when it'ivil'l be clear-,of the lmain' track rail'and under :such

. conditions the Wlieelsdf passingfcars can its' `forward" Wheel the trackrail l passes" ontov the friction ybar land then' engages 'tlieichock '11',A whereupon the "momentum Iof the cai' Will driveA the chock,"frictioii bai` 'and carriage lengthwise along' thetrack and the' weight' of Ethe" car vresting Von ft'lie Wheel on the vrbar 14 vvilllb'e impo'seldon siiclil 'frictioi'ibairffand vvill thereby controlfits lfricup the tional engaefeinenttlv 'vvith the' ti'jaek.A and so v"dete'rmii'i'e -the *lengthv of movement 'of' the `i'carriage"required to stop, or tsljowiip to the 'desi'redeztenh' the moving'car. Slioiild itbe" desir'edto bring the car more quickly toffes't'; tlieffri'ction baiy 14' can be moved to ai positioii iii Which `it'vvill receive 'and Slipport'tivoor linoie Wheels'of the car 'whenl its forward Wheel'szhasenga'ged the chock and will' thus' impose a greater friction" load on the apparatus. IShould' itbe' c lesiredy merely` car in accordance sprain ginir"practice` thevicar'can`l be released at any 'time Eby applying 'a piill lontlie chain 21 iifl'ificlij1 tlirougfhl the leverage i mechanism shown, Wil'lfoce the free end of the lever ifagainst tite/'WheelV as a fnlcrnfn and will tliiisiactto ,"drawtlie chocklbaek dotted position, Fig. 1. which' moves it froin` posi# tion in lfr'ont ef the -viflie'el and'`- permits the Wheelto'passg freely" on'fover' the friction bar-14( thereby releasinfvl the car` to move on p'astthe apparatus'. This lrelease of the car nitty beg-'accomplished aiitoinatically 'by using aitrip posit-20 tdoperatethe'bell crank 18` or by providing a limited length of chain the invention herein shown, it is not to be construed that vI ain-limited thereto, as

vention isidefllled 'in thedappended claims.

c lrlavingthiis described my invention. what I claim as new and desire to secure by Let- 1. A friction car stop comprising a frictionbar adapted to slide in engagement with a car track rail, anda laterallyinovable chock connected to ysaid baifn'id ada] ted in operative position yto -j'rrest a'czir 'with a wheel" thereof resting on saidbar.

Q'' 'frictioircarstoin according yto claim 1,`having meansjto shiiftth'e'chogck tijeleiie the car, said bar being adapted xto pleijiiiit the car Wheels to pass on over 3. In ya ydevice of the* clixa'ifacter `described, a friction bar mounted to slide on acar rail track'` and designedtonpeirfiitii vcai \vlic'el 'r 2.!l'nyz l .'f. '\"{fv to pass over it, in combination with ,a chock Y l Y f|-1 connected to the bar, and movable relatively thereto',` to engage or"releasea'` catyvheleldn said bar.` wf 'm' A: friction car stop, comprisingamovable frame, a' giiide'frtlie Ipalilllel with the track for the car 'to :lie' `stopped,` a friction bar on said frame adaptedto yilesft iii frictional fengagementi` on a ca'iftracl rail 'and designedlteperrnit' cnarfvvlieelfto prays/s onto'git', 'and a choclrmo'vable with tliefca'r'- riage and adapted tob'e'e'nga' ed by a ,car Whilethe weight f' tli`e'la`ttei" isE imposed en 'said friction bar. l H l5. Afri'ctioii'car stop, vvcorn able frame, tracks for saidf` rame parallel with the' tracks of the tario bistopled, a friction plate `0'verliiing ,the fraiii'eiind adapted to rest in sliding engagement on ltop offa car track railI and 'iifdaptec'iltot permit the"car"wheel"s tm assontditffand affch-oc'k movable vivitlitlie raineand dis `o seil an intermediate ploiiitlofIsaid'tfiictioii bai", as aiidfor'the purposes described( '6. In a device'df the described, a moveable "carriage, .guides therefor', a track engagg'ingr friction 'bar mounted Q n the ria'g'e;` andE a chockiiiiovblein'to'and 'ent ivlieel engagingy positiii' abovesaid friction Br xi zil' n en `l; I 'y' In a device of the character described, a carriagefliaving" roller si'ipporta a track forsaicll`c`aiiage, friction b'ar overhu'ni'r nenni@ @ii-ing ii; pegged@ i0 engage me resten a car track rail, and chock nio el for transverse movement on lsaid age md adapt@ 't0 he lifiedinto Wheelcheene iv'OSiiOil' @ibm/e elnteimefiiet 116,1'.- tion of said friction'b'ar'l i 4"8l 1Iii' avdev'iceof the character "havingifroler snpp'orts'g'ja rising ,e mova carriage Y j flu. mi 1f :n for said carriage. a friction bar overlying A e l --w uw f een 11@ @feige wrestler; t@ @reise ind :itinere rest on a car track rail, a chock mounted for transverse movement on said carriage and adapted to be shifted into Wheel engag in position above an intermediate portion of said friction bar, and means on the car riage to retract the chock from Wheel engaging position,

9. In a device of the character described, a carriage having roller supports, a track for said carriage, a friction bar overhung from the carriage in position to engage and rest on a car track rail, a chock mounted on a base transversely movable on said car riage and adapted to be shifted into Wheel engaging position above any intermediate portion of said friction bar7 and automatic means to retract the chock from Wheel engagging position.

l0. In a device of the character described, a Wheel carriage, a track support therefor, a transverse slide mounted on the carriage,

a chock mounted on an overhung end of said slide, a friction bar adjustably mounted in overhung position from the carriage and adapted to rest upon the tread of a car track rail, and means to move the chock towards and from operating position above an intermediate portion of said friction bar. 11. In a friction means for braking carsI a friction bar movable in sliding engagement with the tread surface of a car track rail, a movable frame connected to said bar. a retractable chock carried by the frame and movable into position over said bar, and mechanism adapted to utilize the car Wheel as a fulcrum to retract the chock andreleasc the Wheel to pass on over the friction bar.

In testimony whereof I at'fixmmy signature,

LEE Bfr INenAM.

Witness NOMIE WELSH. 

